January arrives with a natural reset point. Many owner-managed businesses with roughly 10 to 25 people look back over the past year and decide it is time to assess whether their IT support is actually delivering — or whether they have simply grown accustomed to the gaps.

The decision between in-house and outsourced IT is one of the most consequential commercial choices a small business makes. It affects daily operations, risk exposure, and the quiet frustration of knowing your technology is not working as hard as it should. The question most SMEs ask is practical: what model gives us reliable support without the overhead that eats into everything else?

This guide walks through the trade-offs that matter — cost, coverage, security, and scalability — so you can make a decision grounded in your business reality rather than a sales pitch.

What does each model actually mean for a 10-to-25 seat business?

It helps to start with clear definitions, because the terminology used by providers often obscures more than it clarifies.

In-house IT means employing one or more people directly on your payroll to manage your technology. A single IT administrator is the most common starting point. Anything above that moves toward a small internal team.

Outsourced IT means contracting an external provider — typically a managed service provider — to handle your day-to-day support, monitoring, and strategic guidance under a defined agreement.

There is also a hybrid model, where a business keeps one internal person for user-facing support and strategic oversight, while an MSP handles the infrastructure, security, and out-of-hours monitoring. This option tends to make sense at larger headcounts, and it is worth keeping in mind as a business grows.

The key question is not which model is universally better, but which one aligns with your business size, complexity, risk tolerance, and growth trajectory.

How do the costs actually compare?

Cost is rarely the only factor, but it is impossible to ignore. The most common mistake SMEs make is comparing headline figures rather than total cost of ownership.

The true cost of an in-house hire

An in-house IT person is more expensive than their salary suggests. Beyond the gross salary, you need to account for:

• Employer national insurance and pension contributions (typically around 15% on top of salary)

• Hardware, software licences, and monitoring tools

• Training and certification to keep skills current

• Recruitment costs, including agency fees if you use one

• Cover for annual leave, sickness, and any resignation

A mid-level IT professional in the UK typically earns between £30,000 and £50,000 gross, depending on location and experience. Once the additional elements above are included, the fully loaded cost for one person often sits considerably higher than the base salary alone.

The more significant constraint is not the cost but the breadth. One person — however skilled — cannot simultaneously deliver deep expertise across Microsoft 365 administration, networking and firewalls, endpoint security, backup and recovery, ransomware response, compliance frameworks, and the line-of-business applications your specific business relies on. You get what that one person covers, plus a dependent set of skills to learn.

What you get with outsourced IT

An outsourced arrangement gives you access to a team with defined specialisms. A typical managed service provider will cover:

• Helpdesk support for day-to-day user issues

• Proactive system monitoring and patching

• Cybersecurity tools and incident response

• Vendor management (Microsoft 365, broadband, hardware suppliers)

• Regular reporting and strategic reviews

• Defined service-level agreements for response priorities

You pay a fixed monthly fee. That fee covers the team, the tools, the coverage when someone is on leave, and the depth of expertise that one hire cannot provide.

The exact figure varies depending on scope, user count, and the level of support required. Rather than quoting market benchmarks that shift between providers, the useful approach is to understand what you are buying and whether it matches your needs.

Does outsourced IT create a security gap?

This is one of the most common concerns when considering outsourcing, and it deserves a direct answer.

An outsourced provider does not inherently make your business less secure. What matters is whether that provider operates to defined security standards, holds relevant certifications, and can demonstrate that they protect client environments to a recognisable baseline.

If your in-house person takes a day's holiday, your security monitoring, patching, and alerting effectively pause. An outsourced provider continues operating across a team. Monitoring does not stop when one person is unavailable.

The real security question is not in-house versus outsourced in abstract terms. It is: does the specific provider we are considering have the standards, certifications, and operational discipline to protect our environment reliably?

What to look for in a security-minded provider

• Cyber Essentials certification. This is the UK government-recommended baseline. Ask whether they hold it, and whether it is the self-assessed level or Plus with independent technical testing.

• Defined security standards. Can they describe which controls are standardised across their client base, and how they handle exceptions?

• Governed admin access. Do they follow Microsoft's current guidance on privilege management, including separate admin accounts and MFA on privileged access?

• Reporting you can audit. Do they produce regular evidence of what is happening in your environment, or do they offer reassurance without data?

The NCSC's small-business guidance frames cybersecurity as a practical matter of building baseline controls and maintaining them. A well-run outsourced arrangement delivers that maintenance continuously. A single in-house hire delivers it as much as their schedule allows.

How do coverage, skills, and scalability compare?

Coverage and availability

An in-house person works within normal business hours unless you arrange overtime. When an issue arises outside those hours, you are either waiting until the next working day or paying a premium to rouse someone.

An outsourced provider with monitoring in place will typically identify and respond to critical issues across a broader timeframe. A SOC team watching alerts overnight, at weekends, and on bank holidays is not relying on anyone's goodwill — it is built into the operating model.

That said, around-the-clock coverage needs differ between businesses. A Sussex-based accountancy firm with 15 staff closing at 5pm on Fridays has a different needs profile than a Kent-based logistics operation running warehouse systems into the evening. You do not need 24/7 helpdesk if your business does not run 24/7. What you do need is confidence that critical infrastructure is monitored and that someone will respond before small issues become major ones.

Skills breadth

Modern IT environments demand competencies across multiple disciplines. The more specialised your stack, the more specialised the skills required.

An in-house team can develop deep knowledge of your specific business applications and culture. That institutional knowledge has value. But it rarely extends to the full breadth of modern cloud, security, networking, and compliance skills.

An outsourced provider should bring a cross-section of expertise across those disciplines, because that is what their client base demands. The practical question is whether the specific provider can demonstrate that breadth — through certifications, stated specialisms, and examples of the types of businesses they support.

Scalability

Adding staff to your business is straightforward from an HR perspective. Adding the IT capacity to support them depends on your model.

With an in-house hire, scaling up requires either hiring additional people — with all the associated cost and recruitment overhead — or stretching the existing person further, which increases the risk of gaps forming in coverage.

With an outsourced arrangement, adding users or sites is typically a matter of confirming the change with your provider and adjusting the agreement. The team behind your contract scales with you, because that capability exists already.

Conversely, if your business contracts, an in-house arrangement means you still carry the salary of someone whose workload has decreased. An outsourced model can be adjusted to match reduced scope, keeping costs aligned with actual need.

When does in-house IT actually make sense?

In-house IT is not a universally bad choice. It is a specific choice that makes sense under specific conditions:

• Your business has reached a scale (typically 50+ staff) where the cost of in-house begins to align with the cost of outsourcing.

• You have highly specialised or bespoke systems that demand embedded expertise.

• You need a strategic technical resource that reports directly into leadership and owns longer-term technology planning, supported by an MSP for day-to-day delivery.

• Regulatory or commercial requirements demand someone physically present and deeply embedded in day-to-day operations.

For a 10-to-25 seat business, none of these conditions usually apply. The hybrid model — one internal person plus an MSP — is where some SMEs land as they grow, but it is typically not the right starting point.

What should you evaluate before deciding?

Rather than relying on a single metric, use a structured set of evaluation criteria:

• Coverage: Does the arrangement cover the hours your business actually operates, plus a margin for critical incidents?

• Security posture: Does the provider operate to defined standards, and can they show you evidence?

• Skills breadth: Is there a team behind the arrangement, or is it dependent on one person's availability and knowledge?

• Cost clarity: Can you predict your annual spend without unexpected charges, and does that spend match the outcomes you need?

• Scalability: Can the arrangement grow with your business without requiring another recruitment cycle?

• Relationship quality: Do you have a named contact who understands your business, or are you a ticket number in a queue?

These criteria apply equally whether you are deciding between in-house and outsourced, or evaluating whether your current arrangement is fit for purpose.

Making the decision

For most SMEs with 10 to 25 people, the question is not whether outsourcing is morally superior to in-house work. It is whether the specific arrangement you are considering gives you the coverage, security, and scalability you need at a cost that makes commercial sense.

The providers that work well for businesses of this size share common characteristics. They standardise the controls that matter, they govern access tightly, they produce evidence rather than reassurance, and they can explain clearly how they respond when things go wrong.

If you are weighing up your options, or if your current support model is showing cracks that are becoming harder to ignore, a structured assessment of your environment against recognised security standards will clarify where you stand and what a better arrangement would look like.

Frequently asked questions

Is outsourcing IT always more expensive than hiring in-house?

No. At the SME level, the fully loaded cost of one IT employee — salary, NI, pension, tools, training, and recruitment — often exceeds the total cost of a well-structured managed services agreement. The cost comparison shifts at larger headcounts, which is why the hybrid model becomes relevant above roughly 50 staff. The important question is not whether outsourcing is always cheaper, but whether it delivers better value for your specific needs.

Can a small business trust an external provider with its security?

Trust is earned through standards, evidence, and transparency. A provider that operates to a defined security baseline, holds relevant certifications such as Cyber Essentials, governs admin access properly, and produces regular reporting gives you a defensible level of trust. The alternative is trusting a single person's judgement and schedule. Both require evaluation — neither is self-evident.

What about the relationship advantage of an in-house person?

Having someone on-site who knows your business intimately is valuable. A good outsourced provider closes most of that gap through a dedicated account engineer who understands your context. The trade-off is that you lose the person at the next desk who knows everyone's name, but you gain a team with broader technical capability. Which trade-off your business values depends on your priorities.

When should a business consider a hybrid IT model?

A hybrid model — one internal IT person plus an outsourced provider — typically makes sense when a business has grown large enough (often 40–50+ staff) that an internal person adds value in strategic oversight and user-facing support, while the MSP handles the technical depth behind them. It is a growth-stage model, not a starting point.

How do we evaluate an outsourced provider if we are not technical?

You do not need technical expertise to evaluate a provider. Focus on questions that reveal their operating model: What security standards do you operate to? How do you govern admin access to client environments? What reporting do clients receive, and how often? Can you walk me through what happens during a security incident? Clear, specific answers from providers who operate to standards — not vague promises — are the signal you should look for.